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An eight-year-old girl found a pre-Viking era sword while swimming in a lake in Sweden during the summer. The sword was initially reported to be 1,000 years old, but experts at the local museum now believe it may date to around 1,500 years ago. Read more https://www.bbc.co.uk/news/world-europe-45763186 Facebook Twitter Google+ Pinterest LinkedIn

[ad_1] Image copyright NASA Image caption The aim was to sample emissions under real-world conditions Some close-quarter flying has provided new insights into aircraft pollution. US space agency-led scientists flew small, instrumented, chase planes directly in the exhaust plume of a big jet to measure the sorts of gases and particles being thrown out. The […]

[ad_1] Image copyright Trustees of the NHM Image caption The bones were also chewed but these are not teeth marks A series of zig-zag marks on a human bone found in a UK cave is evidence of a cannibalistic ritual that took place some 15,000 years ago. Scientists have long recognised that cannibals operated at […]